Humidifier



FIG. 1 is a perspective view of a humidifier according to our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines shown in the drawings show portions of the humidifier which form no part of the claimed design. 

CLAIM We claim the ornamental design for a humidifier, as shown and described. 